Checking for the NFS Version 4 Domain

Before assigning a value for your network's NFS version 4 domain, check
to see if an NFS version 4 domain has already been configured for your network.
The following examples provide ways of identifying your network's NFS version
4 domain.

To identify the NFS version 4 domain from a DNS TXT RR, use
either the nslookup or the dig command: